Car-door-operating mechanism



May'l, l923.

A. CAMPBELL CAR DOOR PERATING MECHANISM 2 Sheets-Sheet l ofginal Filedneo. 27, 1921 WMA/tg] May l, 1923. 1,453,701

A. CAMPBELL CAR DOOR OPERATING MEGHANISM original Filed Dec. 27, 1921 Sheets-Sheet 2 Y drawings,

Patented May l, 1923..

ARGYLE CAEPELL, 0F CHICAGO, ILLINO f tatami EQUIPMENT COMPANY, OE CHICAGO, ILLINOIS, A CORPORATION OE VILLINcpIs,`

i CAR-DoOaforERATING MECHANISII. f

@Fris i fi Is, AssIGNOa To ENTERPRISE `RArrivvfnf` original application sied December 27, ieeifseri'ai No. 525,105. 'Divided 'anla this appneattnfaied July 10,1922. `serial No: 573,848. l a;

To all whom it may concern# 4 f Be it known that I, ARCYLE CAMPBELL, am citizen of the United States, residing` at Chicago, in the county of Cook and State of 5 Illinois have inventedl a certain new and useful Improvement in Car-Door-Operating Mechanism, of which the .following isa full, "clear, concise, and exact description, reference being had to the accompanying forming a part of this specifica` tion.

'This invention relates to improvements 1n car ldoor'operating mechanism. y This application is a division of my copending application, Serial No. 525,105, led

December 27, 1921.

In certain types of dumpA Cars, it is cus' 'tomary to employ` deep-bellied side sills or*v girder's, thus making it exceedingly diiiicult" to employ any ofthe usualtypes of door,y v mechanism satisfactorily o n account of thel "inac'cessibility of the parts.

' vOne object ofmy invention is toprovidel a simple and efficient oloor lifting and lock- `ing arrangement for dump cars which isl especially adapted forrthose types of cars'y having'deep side'. sills [and pivoted floor doors between the sills and wherein the mechanism must necessarily be operated. at*

the side of the car.

I n-the drawings forming a part vof thisspecification, Figure 1 is a vertical, longitudinal, sectional view of a portion of a dump car showing my improvements in connection therewith, the section being taken in a plane inside of the sidewall and side sill of the car and looking toward the center sill of the car. Figure 2 is a top plan view of the co-nstruction shownV inv Figure 1 but with the 40 I'ixed floor boards omitted and the doors indicated conventionally bygdotted lines, in order to better illustrate the door operating mechanism and its relation to the parts of the car underframe. Figure 3 is a vertical,

transverse, sectional view ofthe structure illustrated in kFigures 1 and 2 and'corresponding substantially to the broken section line SH3 of Figure 2. And Figure 4 is a vertical, sectional view ofthe side sill of the car, corresponding substantially to the section'line 4-4`of Figure 2 and showing, in edge -elevation, the means for locking and releasing the'door operatingshaft.

In said drawings, the car is shownas provided with a 'deep-bellied side sill 10, builtup'center' sill 11, sidewall 12, andjpressed diaphragms or needlebeams 13, 14, land 16; In the particularl type ofvcar shown,

eight pivoted -iioor doors wouldqbe'employed,

y four on'. each side ofthe center'si'll, the four doors on oneside being arranged in pairs separated by fixed Hoor sections. OnlyjoneA l pair of such doors is illustrated in the drawings, it being understoodfthat there will be a Correspondingpair i transversely'v alined' therewith but on the' opposite side of the center sill and that the operating mechanism which I have shown, is adapted for"simul` taneously operating four doors.l The fixed 'floor sections' are indicated at 17, 18. and 19,

the fixed floor section 18'being 4intermediate the'two pivoted doors L2Ojand V.21, shown in f thedrawings. `'Ihe'ffloor section 18 bridges the spacebetween the two relatively shallow needle beams 14 and 15', thus aifording a suitable cover and protection for the operating shaft and other parts of the mechanism` associated therewith.; The door 21 ispivotally. supported lby vsuitable brackets 22 secured tothe deep needlebeam 13 andthe door 20 is .similarly supported by brackets 22 secured to the 'shallow needle beam 16.

It will be noted that the doors 20 and 21 areadapted toswingabout axes extending transversely of the car and that the free edges of the doors are extended toward each other and engage under iioor plates 23-23 secured to the edgesl of the fixed floor sectionjlg, In carrying out my invention, Iemploy a transversely extending operating shaft 24 which is mounted -in suitable bearingscari ried'by the 7'side sill '10"and. centerv sill '11, it

from side to sidel of Vthe car. Onl at least one side-of the car, the shaft`24: is extended through the sidesill and provided withy a being yunderstood that'the shafty y24EA extends square or other non-circular end 25 which i it may be rotated by means Ofa claw bar `or other suitable tool. For ea'ch'pair o fdoors 20 and 21, the shaft isprovide'd witha pairl of chain or cable winding drums 26j-'26, the drums being rigidly secured to the shaft.

Each of said drums is providedwith right and left-helical vgrooves 27 Atoaccommodate the'Oppositelyextending cables o r chains indicated conventionally at 28-28 in Figure 1.

Each chain or cable 28 extends over a vsheave wheel 29 rotatably supported on a -heavyfpivot pin AOmounted in a pair of flanges =31--81 formed integral with 'a bracket 32 secured to a needle beam 14. As clearly shown in Figure 3, the flanges 31 of eachbracket 32- are curved andflared toward the winding drum so as to facilitate the passage of the chain or cable through the bracket. Opposite each sheave wheel 29 the bracket is formed with a Vvertically elongated opening i3-which alines with a correspending opening 34, cut in the web of the Yneedle beam. It will be fnoted that the securing flanges of the brackets 32 reinforce the needle beamsI around the openings there- "of and thus compensate for the metal removed. l

The ends of the chains or cables 28 are attached to eye-bolts 35 which are horizontally adjustably'mounted in anchor castings 3G secured in line therewith tothe under 'sides 'ofthe doors. Each of said anchor castings 36 is provided with a bell mouth 37 through which the cable or chain passes.

By rotating the shaft in a clockwise '.di rection, as viewed in Figure 1, the chains or cables from allv four doors will be simulv taneouslyanduniformly wound around the respective drums, thus elevating the doors to closedposition.. The doors will be held in closed position so long as the operating shaft is prevented againstrotation in a counterclockwise'direction. As hereinbefore noted, ythe floor' section 18 covers and proteetsthe shaft, drums, flexible connections and also ythe sheave wheels V29 and brackets are amply protected yagainst injury during discharge of the load.

vThe mechanism for locking theV shaft 24 in fixed position may be of anyfwell known construction, and may have associated therevwith the locking camand safety device disclosed in my co-pending application referred to. As the specific construction of these elements does not form a part of the present invention, adetailed showing and description of the same is not deemed necessary, said elements being fully disclosed in my co-pending application referred to.

'As herein shown, in Figures 2 and 4, to *lock the operating shaft, the latter has secured theretooutside'of the side sill 10, a ratchet wheelBS. The bearing for this end of the shaft is formed on a reinforcing casting 4t() which is secured to the inner side of the side sill 10,- as shown in Figure 4. Cooperable with the 'ratchet wheelv 38 is a 'latch Alever designated generally by the refe 'erence A. 'Saidlever A is pivoted at its upper end on the pivot bolt 41, said bolt l1 being carried jat its inner end by said `plate 40 and at its outer end by an outer cover plate 42 which is held spaced from the side sill 10. Nearits point of pivotalv support, the latch lever A is formed witha pawl shoulder adapted to engage with the teeth of the ratchet wheel BS'in `1 such a -manner as to prevent the latter'from rotating counter-clockwise as shown in Figure 1. At its lower end, the lever A is formed with a suitable Lhandle 44. v

The lever A is held in locked relation with the ratchet wheel 88 by a cam plate 51 pivotally supported as indicated at 52 between the cover plate 42 and the sidesill 10. 5 Said cam plate lvcooperates vwith a curved' cam surface formed on the upper end of the lever A. c

l lhave herein shownl and describedlwhat now `consider thepreferred Amarmer of carrying out the invention but the same is merely illustrative andl contemplateall changes vand modifications that comel within:

the scope of the claims appended hereto.

l claim v 1. In a dump car, the combination with a pair of oppositelyswinging v.pivoted floor doors separated by an intermediate .fixed floor section, said doors having theirpivots extending transversely ofthe car; of an 0perating shaft-located beneath said 'floor sectonand on a level`- below .the plane ofthe doors when the latter are in closed position,l

tion, the combination with an `operatingshaft located beneath said floor section,.said shaft having a plurality of winding drums thereon, each drum having right. and left helical grooves, said shaft extendingparallel to the pivotal axes of the doors; of oppositely extending flexible connections attached to said drums at one setA of ends and. at their other set of ends to the doors.

in a dump car having a'deep side sill, transverse needle beams, a pair of oppositely swinging pivoted floor'doors and a fixed floor section intermediate the doors, saidfixed floor section. extending between two ofthe needle beams; the combination with an operating shaft located beneath said fixed floor section and extendingv parallel to the pivotal axes of the doors and having one end projected throughsaid side sill; of Qheave wheels supported on said two needle beams; and oppositely extending flexible connections from said shaft `to said doors passing oversaid .sheave wheelsandf Hoor section intermediate the doors, said passing orerfsaidsheave Wheels-and throngh l fixed floor section extending between two Aopenings in `said-needle' beams.

of the needle beams; the combination with Iny Witness thatl claim the'foregoingII an operating shaft located beneath said fixedl have hereunto subscribed'myname this 24thl 5 Hoor section and extending parallel `to the dayof June1922i." l l lpivotal axes of thevdoors andhaving one f l j Q "1 end projected through said side sill; of f sheave Wheels supported on said-two needle Witnesses; l beams; and oppositely extendingffiexible; l` r,UNA Q ;GrRIGsBi,l`r`

10 connections from said shaft t'o-*said doors l`ANN BAKER. 

